Electbotype-coating machine



' L. S. FREED.

ELECTROTYPE COATING MACHINEFY APPLICATION FILED JAN. 19, I917.

1,319,327. Patented Oct. 21,1919.v

LEMUL S. FREEJJ, OF PHILADELPHIA, PENNSYLVANIA.

ELECTROTYPE-OOATING MACHINE.

Specification of Letters Patent.

Patented Oct. 21, 1919.

Application filed January 19, 1917. Serial No, 143,231

To aZZ whom it'mag concern:

Be it known, that I, LEMUL S. FREED, a citizen of the United-States of America, residing in the city and county of Philadelphia, in the State of Pennsylvania, have invented certain new and useful Improvements in Electrotype-Coating Machines, of which the following is a true and exact description, reference being had to the accompanying drawings, which form a part thereof.

My presentinvention relates to apparatus speciallydevised for leading or coating non-conducting electrotype blanks with a graphitic or like conductive coating, and the object of my present invention is to provide such apparatus with simple and effective mechanism for feeding a series of electrotype blanks at regular intervalsto the coating apparatus proper.

The various features of novelty which characterize my invention are pointed out with particularity in the claims annexed to and forming a part of this specification. For a better understanding of the invention, however, and the advantages possessed by it, reference should be had to the accompanying drawings and descriptive matter, in which I have illustrated and described a preferred construction embodying my invention. 7

Of the drawings:

Figure 1 is an elevation partly in section of an electrotype coating apparatus embodying my present invention; and

Fig. 2 is a section taken on the line 2-2 of Fig. 1.

In the drawings, A represents a tank-like receptacle in which are journaled rolls B and B over which runs a belt conveyer C which serves to carry the electrotype blanks slowly one after another underneath the spray pipes S. The latter are located in the spray hood A mounted on the upper side of the receptacle A, and discharge graphite-containing or other conductive liq uid on to the electrotype blanks passing beneath them. As shown, the roll B is provided with a driving pulley B and is also connected by beveled gears D, the vertical shaft D and beveled gears D .to a shaft E, which is located parallel to and above the roll B and is journaled in supporting brackets A The shaft E has secured to it beveled gears E which are in mesh with the similar beveled gears F carried at the upper ends of feed screws F, which are journaled in brackets A adjustably secured to the brackets A As shown,the feed screws F are oppositely threaded and rotate in opposite directions. The oppositely running threads F on the feed screws F are of such pitch and dimensions as to provide adequate supporting ledges on which the electrotype blanks X may be stackedup, as shownin the drawings. As shown, these blanks .abut against a vertical stop A carried by "the tank 'A.- In operation, as feed screws F by the threads of the'feed screws, is lowered, and the blanks are dropped from the bottom of the stack .on tothe belt Cat regular intervals fixed .by rate oftravel of tthebelt C and the gearing connecting the feed screws to the shaft B. Advantageously, as

"shown, the rotation of the feed screws F is in such direction as to frictionally urge the blanks X against the plate A. With the simple and effective feeding mechanism described, a considerable labor saving is effected, as heretofore in the. operation of are rotated, the stack of blanks X supported electrotype blank coating'apparatus of the character shown, it. has been necessary to employ an attendantto feed blanks to the belt C or other conveyer during the period in which the apparatus is in operation.

By adjusting the brackets A toward and I away from one another and similarly ad-. justing the gears E the apparatus ,may be readily adapted to blanks of different widths. Y I 7 While in accordance with the provisions of the statutes, I have illustrated and described the best forms of my invention now known to me, it will be apparent to those skilled in the art that changes can be made in the form of my invention without departing from its spirit and that some features of my invention can be used without a corresponding use of other features.

Having now described my invention,

what I claim as new and desire to secure by Letters Patent, is

1. In electrotype blank coating apparatus, the combination with the means for horizontally transporting and coating blanks convolutions of which the opposite edges of the blanks may be inserted to form a stack of blanks from the lower end of which blanks are fed, one at a time, by the rotation of said feed screws, to said transporting and coating mechanism.

2. An electrotype coating apparatus comprising in combination a horizontally traveling blank conveyer, means for spraying blanksplaced on said conveyor, and means for feeding blanks at regular intervals to said conveyor, comprising a pair of vertical feed screws geared to said conveyer and arranged above the latter and adapted to have the opposite edges of blanks received between and supported by thread convolutions of the two feed screws, to form a stack of blanks from the lower end of which blanks are dropped, one at a time, onto said conveyer.

3. In an electrotype blank coating apparatus, the combination of a horizontally traveling blank conveyer, means for spraying blanks placed on said conveyer, and means for feeding blanks at regular intervals to said conveyer, comprising a pair of oppositely threaded feed screws geared to said conveyer to rotate in opposite directions and arranged above the conveyer and adapted to have the opposite edges of blanks received between them and supported by the thread convolutions of the two feed screws to thereby form a stack of blanks from'the lower end of which blanks are dropped, one at a time, onto said conveyer, and a vertical stop against which the front edges, having reference to the direction of travel of said conveyer, of the blanks in said stack are frictionally urged as the feed screws are rotated.

4. In electrotype blank coating apparatus, the combination with the means for horizontally transporting and coating blanks of a feeding mechanism located above said transporting means and comprising a pair of vertical feed screws between the thread convolutions of which the opposite edges. of the blanks may be inserted to form a stack of blanks from the lower end of which blanks are fed, one at a time, by the rotation of said feed screws, to said transporting and coating mechanism, and means for adjusting said screws toward and away from one another.

LEMUL S. FREED.

Copies of this patent may be'obtained for five cents each, by addressing the Commissioner of Patents,

7 Washington, D. G. i 

